The world’s smallest diode was constructed from a single molecule


“It gives us new insights into the electronic transport mechanism.” The nano-diode was created from a single DNA molecule constructed from 11 base pairs. It can’t be seen under an ordinary microscope. Layers of a molecule called “coralyne,” were inserted (or intercalated) between layers of DNA. The breakthroughs in genetics developed to sequence the human genome have now made it relatively easy to precisely manufacture and manipulate DNA Typically, DNA is 0.34 nanometers long per base pair. The scientists suggest that they can further improve their DNA diode to achieve functional molecular devices. Their study was published in the journal Nature Chemistry. The project could lead to more advanced devices, since scaling down components means engineers can cram more into regular-sized gadgets.


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